/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

*

*

*

*

*/

#include <QWidget>

#include <QApplication>

#include "qstmgestureevent.h"

#include "qstmuievent_if.h"

using namespace qstmUiEventEngine;

Qt::GestureType QStm_Gesture::s_assignedType = Qt::CustomGesture;

QStm_GestureEvent::QStm_GestureEvent():

                   QEvent(QStm_GestureEvent::stmGestureEventType())

{

}

QStm_GestureEvent::~QStm_GestureEvent()

{

}

QStm_Gesture::QStm_Gesture(QObject* parent) : QGesture(parent)

{

	    m_speed = 0.0;    

	    m_direction = -1;

	    m_vector = QPoint(0,0);

	    m_gstType = QStmUknownGestureType; 

	    m_state = Qt::NoGesture;

	    m_gstSubType = 0;

	    m_pos = QPoint(INT_MIN,INT_MIN);

	    m_details = NULL;

	    m_speedVec = QPointF(0.0, 0.0);

	    m_target = NULL;

};

QStm_Gesture& QStm_Gesture::operator=(QStm_Gesture& other)

{

    m_speed = other.getSpeed();    

    m_direction = other.getDirection();

    m_vector = other.getLengthAndDirection();

    m_gstType = other.getGestureStmType(); 

    m_state = other.gestureState();

    m_gstSubType = other.getGestureSubType();

    m_pos = other.position();

    m_details = other.getDetails();

    m_speedVec = other.getSpeedVec();

    m_target = other.m_target;

	return *this;

}

QString  QStm_Gesture::gestureName()

{

    switch (m_gstType) {

        case QStmUknownGestureType:

            return QString("QStmUknownGestureType");    

        case QStmTouchGestureType:

            return QString("QStmTouchGestureType");

        case QStmTapGestureType:

            return QString("QStmTapGestureType");

        case QStmDoubleTapGestureType:

            return QString("QStmDoubleTapGestureType");

        case QStmLongPressGestureType:

            return QString("QStmLongPressGestureType");

        case QStmHoverGestureType:

            return QString("QStmHoverGestureType");

        case QStmPanGestureType:

            return QString("QStmPanGestureType");

        case QStmReleaseGestureType:

            return QString("QStmReleaseGestureType");

        case QStmLeftRightGestureType:

            return QString("QStmLeftRightGestureType");

        case QStmUpDownGestureType:

            return QString("QString");

        case QStmFlickGestureType:

            return QString("QStmFlickGestureType");

        case QStmEdgeScrollGestureType:

            return QString("QStmEdgeScrollGestureType");

        case QStmPinchGestureType:

            return QString("QStmPinchGestureType");

        case QStmCornerZoomGestureType:

            return QString("QStmCornerZoomGestureType");

        default:

            return QString("XZ Gesture");

    }	

}

void QStm_Gesture::gestureTypeToMouseTypes(QVarLengthArray<int, 4>& types)

{

	switch (m_gstType) {

		case QStmTouchGestureType:

		{

			types.append(QEvent::MouseButtonPress);

			break;

		}

		case QStmDoubleTapGestureType:

		{

			types.append(QEvent::MouseButtonDblClick);

			break;

		}

		case QStmHoverGestureType:

		case QStmPanGestureType:

		case QStmLeftRightGestureType:

		case QStmUpDownGestureType:

		case QStmCornerZoomGestureType:

		{

			types.append(QEvent::MouseMove);

			break;

		}

		case QStmReleaseGestureType:

		{

			types.append(QEvent::MouseButtonRelease);

			break;

		}

		case QStmTapGestureType:

		{

			types.append(QEvent::MouseButtonPress);

			types.append(QEvent::MouseButtonRelease); 

			break;

		}

		case QStmUknownGestureType:

		{

		    QStm_UiEventIf* uiEvent = static_cast<QStm_UiEventIf*>(m_details);

		    if (uiEvent) {

		        QEvent::Type evType = uiEvent->mapToMouseEventType();

		        types.append(evType);

		    }

		    break;

		}

		case QStmFlickGestureType:

		case QStmEdgeScrollGestureType:

		case QStmPinchGestureType:

		case QStmLongPressGestureType:

		default:

			break;

	}

	return;

}

bool QStm_Gesture::sendOrPostMouseEvents(QObject* receiver, Qt::KeyboardModifier modifier, bool send)

{

    bool ret = false;

    QPoint pos = position();

    QPoint gpos = pos;

    QWidget* w = NULL;

    Qt::MouseButtons buttons = Qt::LeftButton;

    buttons &= ~Qt::RightButton;

    buttons &= ~Qt::MidButton; 

    buttons &= Qt::MouseButtonMask;

    if (receiver->isWidgetType()) {

    	QWidget* w = static_cast<QWidget*>(receiver);

    	pos = w->mapFromGlobal(gpos);

    }    

    QVarLengthArray<int, 4> mouseTypes;

    gestureTypeToMouseTypes(mouseTypes);   

    for (int i = 0; i < mouseTypes.size(); i++) {

    	QEvent::Type mtype = static_cast<QEvent::Type>(mouseTypes[i]);

    	if (mtype == QEvent::MouseButtonRelease) {

    		buttons = 0;

    	}

    	if (send) {

    	    QMouseEvent evt(mtype, pos, gpos, Qt::LeftButton, buttons, modifier);

    	    if (w) w->grabMouse();

    	    QApplication::sendEvent(receiver, &evt);

    	    if (w) w->releaseMouse();

    	}

    	else {

    		QMouseEvent* evt = new QMouseEvent(mtype, pos, gpos, Qt::LeftButton, buttons, modifier);

    		QApplication::postEvent(receiver, evt);

    	}

    }

    return ret;

}

bool QStm_Gesture::sendEvent(QEvent* event)

{

    QWidget* target = static_cast<QWidget*>(m_target);

    QWidget* w = NULL;

    if (target) {

        QPoint pos = target->mapFromGlobal(m_pos);

        w = target->childAt(pos);

        if (!w) {

            w = target;

        }

    }

    if (w) {

        if (event->type() == QStm_GestureEvent::stmGestureEventType() && 

            m_gstType == QStmUknownGestureType) {

            QStm_UiEventIf* uiEvent = static_cast<QStm_UiEventIf*>(m_details);

            QWidget* modal = QApplication::activeModalWidget();

            if (uiEvent && m_target == modal) {

            //re-generate mouse events

                sendMouseEvents(w);

            }

        }        

        else {

            QApplication::sendEvent(w, event);

        }

    }

}

bool QStm_Gesture::sendMouseEvents(Qt::KeyboardModifier modifier)

{

    Q_ASSERT(m_target);

    QWidget* target = static_cast<QWidget*>(m_target);

    QPoint pos = target->mapFromGlobal(m_pos);

    QWidget* w = target->childAt(pos);

    if (!w) {

        w = target;

    }

    return sendMouseEvents(w);

}

bool QStm_Gesture::sendMouseEvents(QObject* receiver, Qt::KeyboardModifier modifier)

{

	return sendOrPostMouseEvents(receiver, modifier, true);

}

bool QStm_Gesture::postMouseEvents(QObject* receiver, Qt::KeyboardModifier modifier)

{

	return sendOrPostMouseEvents(receiver, modifier, false);

}

QList<QMouseEvent*>   QStm_Gesture::getMouseEvents()

{

	QList<QMouseEvent*> mouseEventsList;

    QPoint pos = position(); 

    QPoint gpos = pos;

    Qt::MouseButtons buttons = Qt::LeftButton;        

    buttons &= ~Qt::RightButton;

    buttons &= ~Qt::MidButton; 

    buttons &= Qt::MouseButtonMask;

    QVarLengthArray<int, 4> mouseTypes;

    gestureTypeToMouseTypes(mouseTypes);

    for (int i = 0; i < mouseTypes.size(); i++) {

        QMouseEvent* evt = new QMouseEvent(static_cast<QEvent::Type>(mouseTypes[i]), 

        		               pos, gpos, Qt::LeftButton, buttons, Qt::NoModifier);

        mouseEventsList.append(evt);

    }

	return mouseEventsList;

}

QSTMGESTURELIB_EXPORT QStm_Gesture*  getQStmGesture(QEvent* event)

{	

	QStm_Gesture* gesture = NULL;

	if (event->type() == QEvent::Gesture) {

	    QGestureEvent* ge = static_cast<QGestureEvent*>(event);

	    QList<QGesture*> l = ge->gestures();

	    QGesture* g = !l.isEmpty() ? l.at(0) : NULL;

	    if (g && g->gestureType() == QStm_Gesture::assignedType()) {

	        gesture = static_cast<QStm_Gesture*>(g);

	    }

	}

	return gesture;

}